About this tool

Nox to Phot Converter

Convert nox to phots instantly. Free, bidirectional, and fully in-browser.

1 nox equals 1e-7 phots — enter any nox value to convert it to phots instantly. This Nox to Phot converter is a client-side tool: it applies a single multiplication (ph = nox × 1e-7) in your browser, updates the moment you type, and works in both directions — edit either field, or press swap, to convert phots back to nox. A reference table lists common nox values already converted, and nothing you enter is sent to a server.

How to use Nox to Phot Converter

1. 1

   Open Nox to Phot Converter on AltFTool — it loads instantly in your browser.

2. 2

   Type the value you want to convert into the Nox field.

3. 3

   Read the equivalent in phots in the result field, and copy it if needed.

4. 4

   Use the decimal-places slider for more or less precision, or press swap to convert phots to nox.

Why use Nox to Phot Converter

• Instant, both ways

  The result updates as you type, and the swap button flips the conversion to phot → nox without reloading.

• Exact Illuminance math

  The conversion uses the precise factor (ph = nox × 1e-7), so the number matches a manual calculation to the decimal places you choose.

• Adjustable precision

  A slider sets 0–10 decimal places, and very small or very large results switch to scientific notation instead of rounding to zero.

• Private and free

  Everything runs locally in your browser — no upload, no account, no limit on conversions.

Common use cases

• Converting a nox measurement to phots for a spec, listing, or report.
• Checking nox↔phot figures while comparing products, datasets, or documentation.
• Learning the nox-to-phot relationship from the worked formula and the common-value table.

Frequently asked questions